Control unit



FIG. 1 is a top, front, right perspective view of a control unit showing our new design;

FIG. 2 is a top, rear, right perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines showing portions of the control unit are included for the purpose of illustrating environment and form no part of the claimed design. 

The ornamental design for control unit, as shown and described. 